KDP categories · Top KDP authors
Richard B. Spence: Amazon KDP author data
As of Nov 6, 2026, Richard B. Spence has 3 books on Amazon, 3 of them on a best-seller list in the last 30 days (best rank #1), mostly in Weapons & Warfare, Engineering & Transportation, Conventional.
| Median price | $18.49 |
|---|---|
| Price range (middle 50%) | $16.20 – $19.09 |
| Median reviews | 3 |
| Total reviews | 3 |
| New books (30 days) | 1 |
| Breakout books (30 days) | 1 |
What stands out
- Median price $18.49, 27% above the median of their main category, Weapons & Warfare.
Richard B. Spence's best-ranked books
-
UFOs and the Cold War
by Richard B. Spence
- Price$13.91
- Reviews-
- Published2026-10
-
Secrets of the Occult
by Richard B. Spence
- Price$18.49
- Rating3.5
- Reviews3
-
The Great Villains of History
by Richard B. Spence
- Price$19.69
- Reviews-
Main categories
FAQ
How many books does Richard B. Spence have on Amazon?
KDPTop tracks 3 of their books; 3 made an Amazon list in the last 30 days.
Which categories does Richard B. Spence publish in?
Their books chart most often in Weapons & Warfare, Engineering & Transportation, Conventional.
How does Richard B. Spence price their books?
The median price is $18.49; half of the books cost $16.20–$19.09.
Has Richard B. Spence released new books recently?
1 new book in the last 30 days, 1 of which reached a Best Sellers list.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.